74F845 Datasheet, PDF (4/6 Pages) Fairchild Semiconductor – 8-Bit Transparent Latch

AC Electrical Characteristics
Symbol
Parameter
t_PLH
Propagation Delay
t_PHL
D_n to O_n
t_PLH
Propagation Delay
t_PHL
LE to O_n
t_PLH
Propagation Delay
PRE to O_n
t_PHL
Propagation Delay
CLR to O_n
t_PZH
Output Enable Time
t_PZL
OE to O_n
t_PHZ
Output Disable Time
t_PLZ
OE to O_n
AC Operating Requirements
Symbol
Parameter
t_S(H)
t_S(L)
t_H(H)
t_H(L)
t_W(H)
t_W(L)
t_W(L)
t_REC
t_REC
Setup Time, HIGH or LOW
D_n to LE
Hold Time, HIGH or LOW
D_n to LE
LE Pulse Width, HIGH
PRE Pulse Width, LOW
CLR Pulse Width, LOW
PRE Recovery Time
CLR Recovery Time
T_A = +25°C
V_CC = +5.0V
C_L = 50 pF
Min
Typ
Max
2.5
4.8
8.0
1.5
3.6
6.5
5.0
8.1
12.0
2.0
4.4
7.5
3.0
5.9
10.0
3.0
6.5
10.0
2.5
5.8
9.5
2.5
7.6
12.0
1.0
3.1
7.5
1.0
2.8
6.5
T_A= 0°C to +70°C
V_CC = +5.0V
C_L = 50 pF
Min
Max
2.0
9.0
1.5
7.0
4.5
13.5
2.0
8.0
2.5
11.0
2.5
11.0
2.0
10.5
2.0
13.0
1.0
8.5
1.0
7.5
Units
ns
ns
ns
ns
ns
ns
T_A = +25°C
V_CC = +5.0V
Min
Max
2.0
2.0
2.5
3.0
4.0
5.0
5.0
10.0
12.0
T_A= 0°C to +70°C
V_CC = +5.0V
Min
Max
2.5
2.5
3.0
3.5
4.0
5.0
5.0
10.0
13.0
Units
ns
ns
ns
ns
ns
ns
ns
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